Found with bin/find-unneeded-includes
Removal proposals and fallout management are dealt with here.

Change-Id: I21217fbac071f06987b989e735982b2dfad6a54e
Reviewed-on: https://gerrit.libreoffice.org/55537Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Jochen Nitschke <j.nitschke+logerrit@ok.de>